Blade sharpening device



FIG. 1 is a perspective view of a blade sharpening device embodying the new design, arranged proximate to a broken line depiction of a sharpening stone.

FIG. 2 is a side view of the blade sharpening device.

FIG. 3 is a front view of the blade sharpening device.

FIG. 4 is a back view the blade sharpening device.

FIG. 5 is a top view of the blade sharpening device; and,

FIG. 6 is a bottom view of the blade sharpening device.

The broken and dashed lines in the drawings represent environmental subject matter and form no part of the claimed blade sharpening device design. The broken lines in FIG. 6 depict portions of the blade sharpening device in which the design is embodied that form no part of the claimed design. 

CLAIM I claim the ornamental design for a blade sharpening device, as shown and described. 